7573906 has 4 divisors (see below), whose sum is σ = 11360862. Its totient is φ = 3786952.

The previous prime is 7573903. The next prime is 7573921. The reversal of 7573906 is 6093757.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6093757 = 107 ⋅56951.

It can be written as a sum of positive squares in only one way, i.e., 7338681 + 235225 = 2709^2 + 485^2 .

It is not an unprimeable number, because it can be changed into a prime (7573903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1893475 + ... + 1893478.

Almost surely, 2^7573906 is an apocalyptic number.

7573906 is a deficient number, since it is larger than the sum of its proper divisors (3786956).

7573906 is a wasteful number, since it uses less digits than its factorization.

7573906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3786955.

The product of its (nonzero) digits is 39690, while the sum is 37.

The square root of 7573906 is about 2752.0730368215. The cubic root of 7573906 is about 196.3842420675.

The spelling of 7573906 in words is "seven million, five hundred seventy-three thousand, nine hundred six".